Zachary Elliott
@zaelefty
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Founder of @PdxInstitute. Restoring reality in science education. Author of four books. Producer of animated videos, articles, and books on sex and gender.
United States
Joined August 2014
The Sex Development Handbook is coming soon! The definitive visual guide for how males and females develop — from typical development to Disorders of Sex Development (DSDs). Sign up here for a digital sample on release day! 🔗 https://t.co/NlNWkkayfg
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You have unknowingly provided an excellent example for the sex binary. Let me explain 😉 Despite this person having a mosaic karyotype with mostly 46:XY cells and some 45:X and 46:XX, the XX cell line dominated in the neutral gonadal ridge, causing the gonads to differentiate
@zaelefty XY=male? https://t.co/dPGYeOQscq
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An enlarged clitoris caused by overexposure to androgens in an XX female with ovaries is not a penis.
@zaelefty Except for the people born with both a penis and ovaries
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"Researchers have found that about 80% of kids who believe they’re born in the wrong body ultimately abandon that belief, so long as they don’t receive medical treatment." https://t.co/vXmoeIxh8K
wsj.com
Chloe Cole was subjected to hormones and a double mastectomy. Her injuries need to be acknowledged.
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To start, you’ve listed 7 chromosomal disorders, called sex chromosome aneuploidies, and believe that they result in neither males nor females. The irony is that the genetic networks still produce males or females, with body plans organized around the production of sperm or eggs.
@TortieCats @whtwldbabsdo Tell me all about genetic variations: XXY, XYY, XXXY, XYYY, XXXX, XXXXY, XXXXX & mosaicism, translocation of the SRY gene & androgen insensitivity. Tell me about sex differentiation during gestation & puberty resulting in incongruent genotype & phenotype. https://t.co/BqH4TRBZS0
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We do not all start female. 1. We are sexed genetically from conception. 2. We begin physically indifferent before differentiating down one or the other pathway. Check out what modern embryology and genetics has to say in our educational video!
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Forming as a female would entail developing ovaries and female genitalia first, and then those organs transform into testes and male genitalia. But this is one of the most popular myths in biology. Instead, all fetuses (while sexed genetically) begin physically indifferent with
@Chris_Davis66 @ElenaKalashni @thefempire50 @xibilli @OkieDokiSis the XY fetus starts forming as a female (as every human fetus) and then later on start developing male traits. There are many things that can hinder with this development so, no, TECHNICALLY that's not present at fertilisation, only chromosomes.
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What is the only chromosomal monosomy condition that is compatible with life? Monosomy means a chromosome is missing its pair.
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Instead of “I’m bad at this”. Say “This is new for me”. This gives your brain the space to learn instead of shut down. This is neuroplasticity in real time.
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Humans aren’t clownfish. Humans cannot change sex. Time travels in one direction. These three beliefs are true and reflect reality. Disbelieving them is your choice, but may lead to self-harm. What would it mean to change sex? @zaelefty answers.
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All fetuses, regardless of their sex chromosomes, begin with the same primordial reproductive systems: Wolffian and Müllerian. Females differentiate the Müllerian and disintegrate the Wolffian, whereas males differentiate the Wolffian and disintegrate the Müllerian. One
theparadoxinstitute.org
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Masterclass for how to respond to pedophilia defenders.
@GhollowayMA94 @zaelefty Yeah, no. Sorry, "Otaku" p3do Please, stay away from kids and don't put ideas into their heads to touch themselves, others, or babies and submit to a program where they can deal with people like you
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At the UNCG event, I discussed how blocking puberty is not reversible.
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.@PTElephant on how it is never okay for a man to entitle himself to women's spaces, no matter how they identify, no matter how many surgeries they have had, no matter their motivations. There are no exceptions. From our discussion at the UNCG.
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Cue examples of hermaphroditic plants, slugs, clownfish, seahorses, female hyenas, and birds with dissortative mating pairs—all of which reinforce the male-female binary. Also cue examples of isogamous mating types and asexual reproduction—neither relevant to the discussion.
@zaelefty Unfortunately, biology goes far further than male/female. Please read more widely.
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I’m getting quite a bit of attention from young earth creationists on the issue of the age of the earth. There is no incompatibility between the established scientific record of a ~4.5 billion year old earth and there being a God of the universe. Those are two separate questions
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I’m not talking about the transition from asexual reproduction to sexual reproduction, which occurred around 2 billion years ago. I’m talking about the transition from isogamous sexual reproduction (no sexes) to anisogamous (male-female) sexual reproduction.
@zaelefty 1.2bn isn’t really true mate The transition from asexual reproduction to sexual reproduction is an interesting transition but it’s not a 1.2bn year old biological system
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Asexual reproduction is older than sex and is not relevant to the post. Hermaphroditic reproduction involves male and female sexes in the same individual, so they are direct examples of what I’m discussing.
@zaelefty A lot of species reproduce asexually or are hermaphroditic.
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